Given below is the histogram depicting the marks obtained by 40 students of
Class-Vlll in a test of English. Look at it carefully and answer the questions that
follow:
(i) What is the class size?
(ii) How many students obtained less than 10 marks?
(iii) How many students obtained more than 15 but less than 30 marks?
WHO WILL GIVE ME THE CORRECT ANSWERS OF THIS QUESTION I WILL MARK YOU AS BRAINLIEST.
Answers
Answer:
First, we make frequency table
Marks | Tally marks | Frequency
0-5 || 2
5-10 ||||| | 6
10-15 |||| 4
15-25 |||| 4
25-30 ||||| ||||| 10
30-35 ||||| | 6
Total Frequency= 40
Before start the first question we will find class interval = 10-15
= 5
(i) class size = 5
(ii) The students who obtained less than 10 marks= 6+2
= 8
(iii) The students who obtained more than 15 marks but less than 30 marks = 4+8+10
= 22